Type-writing machine.



A. W. HEWITT.

TYPE WRITING MACHINE.

APPLIOATION FILED O0'1.19,1905.

Patented May 18, 1909.

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ALLIN W. HEWITT, OF BOGOTA, NEW

COMPANY, OF NEW YORK,

JERSEY, ASSIGNOR 'ro nunnswoonrrrnwaisea N. Y., A CORPORATION or NEW rsassr.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented May 18, 15%.

Application filed October 19, 1905. Serial No. 283,452.

To all whom it may concern:

Be it known that I, ALLIN W. HEWITT, a

citizen of the United States, residin in B- and other documents where it is desired to preserve carbon copies of several such documents on a single long record sheet.

In accordance with my invention the platen may be rotated line by line by means of the usual line-space devices, and may also at any time be freely rotated either backwardly or forwardly-t0 any desired extent; but when it is desired to give the platen the peculiar backward and forward movements required in billing, the handle is grasped, and by a single stroke two gears are caused to engage and rotate the platen backwardly.

Then the new bill is inserted, and by means of a return stroke of said handle, the platen is turned forwardly to its initial position, thereby bringing the first line of 'writingipn the bill to the printing point and avoidipg waste of space upon the long record sheet, which remains in the machine.

Figure l is a Ian, and Fig. 2

. and elevation o front strike writing machine of the Underwood class with my improve ments applied thereto. I w

A cylindrical platen 1 is revolubly mounted upon an axle 2, mounted at its ends in a platen frame com rising the usual end bars 3 connected by a p ate or paper-shelf 4'." The types strike upon the platen. The latter'is rovided with a line space wheel 5, having a etent 6, and operated step by stepby the usual line-spacing devices 7. I

Mounted upon the platen axle and secured. to the platen is abevel pinion 8. Swinging horizontally on a. vertical stud 9 fixed upon the platen frame, is a pa tial bevel gear or sector 10, in rear of the pinion 8 and nor-v is a sectional front side of the mally out of mesh therewith; so that the platen may be advanced by the line-spacing devices, or rotated in either direction by its hand wheels 11 independently of said gear 10. Extending upwardly from the latter is an arm 12, having upon itsfront end a finger piece or handle 13. The armlZ is held in normal position by a spring 14, whichpresses said arm against a fixed stop 15.

In operation, the usual long record sheet and short bill head are introduced together, and rolled forwardly around the platen, and the first bill iawritten in the usual manner. Then the bill may be withdrawn without disturbing the'position of the record sheet in the platen; the pressure rolls 16 being usually released for this purpose. Then by grasping the handle 13 and swinging it to the left at Fig. 1, that is, in the same direction as the letter spacing movement of the laten,

the gear 10 is swung endwise into mes with the pinion 8, and thereby the platen is r0 tated backwardly until the arm 12 is arrested by a stop 17 which is adjustable along a slotted bar 18, the latter curved concentrically with the axis 9 of the sector. The gears and platen remain in this )osition while a fres bill is inserted, and 0 en the handle 13 is swung to the right, thereby r0- tating the platen forwardly to its normal position; and at the same time the platen carriage may be returned by said handle 13' 'to begin a new line of writing. The spring 1 1, it will be understood, maintains the arm 12 against the stop 15, so that the gear 10 may not interfere with the usual movements of the platen, said s ring being too weak to rotate the platen. he pinion 8 should have the same number of teeth as the wheel 5, as such arrangement insures that the pinion teeth when at rest shall always (owing tothe action of spring check 6 on wheel 5) Q66 4}?! similar positions relatively to the first toet on the gear 10, and hence the latter may ill ways engage properly with the pinion.

Variations may be resorted to within the scope of my invention, and portions of my improvements may be used without others; Having thus described my invention, 1

' claim:

1, The combination with a platen, and a set of single-line spacing devices therefor, of a pinion connected to the platen, and means for rotating the platen first backwardly and then forwardly, through arcs greatly in excess of its line-s acing movement, said ronormally out of mesh with said pinion but movable endwise to cause one of said ends to mesh with said pinion.

2. The combination .with, a revoluble platen, and a set of single-line spacing devices therefor, of a pinion connected to the platen, and a curved drivingear having ends and normally out of mesh with said pinion and immovable in axial direction but revoluble upon its own axis to bring one of its ends into engagement with said 1pinion, and capable of rotating the platen t rough an are greatly in excess of its line-spacing movement.

3. The combination with a revoluble platen and a set of single-line spacing devices therefor, of a bevel inion connected to the platen, a mutilated evel gear immovable in axial direction and normally out of mesh with said pinion but revoluble into engagement therewith, and capable of rotating the platen through an are greatly in excess of its line-spacing movement upon said gear.

4. The combination with a revoluble platenoand a set of single-line spacing devices therefor, of a bevel )inion connected to the platen, a mutilated evel gear immovable in axial direction and normally out of engagement with the pinion, and a handle connected to said bevel gear to both turn the gear into engagement with the pinion and rotate the platen backwardly by a single stroke of the handle.

5. The combination with an endwise movable platen frame, a platen mounted thereon, and a set of single-line spacing devices, of a bevel pinion secured to the aten, a mutilated and axially immova le bevel gear mounted upon the platen frame and normally out of engagement with the pinion, and a handle connected to said bevel gear to cause the latter to move into engagement with and rotate the pinion by a movement of the handle in the same direction as the letterspacing movement of the platen frame.

6; The combination with a platen, and a set of single-line spacing devices therefor, of a pinion connected to the laten, means for rotating the platen first bac wardly and then forwardly, through arcs greatly in excess of its line-sp acing movement, said rotary means including a rack having ends and normally out of mesh with said pinion but movable endwise to bring one of said ends into engagement with said pinion; and stops for limiting both the forward and backward movements of the platen effected by said rack.

7. The combination with a platen, and a set of single-line spacing devices therefor, of a pinion connected tothe laten, means for rotating the laten first bac wardly and then forwardly, t ough arcs greatly in excess of its line-spacing movement, said rotary means forwardly vto the bevel gear.

- toothed ,wheel but engageab including a rack normally out of mesh with said PiIIIOII but movable endwise into engagement therewith; and a spring for return- I ingthe rack and platen together to normal position.

8. The combination with a platen, and a set of single-line spacing devices therefor, of a pinion connected to the platen, a rack having ends and normally out of mesh with said pinion but movable endwise to bring one of its ends into engagement with the pinion, to rotate the platen ,first backwardly and then forwardly through an are greatly in excess of the line spacing movement of the platen; a stop for determining the normal position of the rack, and an adjustable stop for deter-,

minin the extent to which the platen is rotated backwardly by said rack.

9. The combination with a revoluble platen and a set of single-line s acing devices therefor, of a inion con'necte to the platen, and an axially immovable mutilated gear normally out of mesh with saidpinion but normally in line with said pinion and revo luble into engagement therewith to rotate the platen both backwardly and forwardly through arcs greatly in excess of the linespacing movement of the platen; and rela tively adjustable stops for limiting the initial and return strokes of said gear.

10. The combination with a revoluble platen. and a set of single-line spacing devices therefor, of a bevel pinion connected to the platen, a bevel gear normally out of engagement with the pinion, and a handle connected to said bevel gear to both'turn the gear into en agement with the pinion and rotate the p aten backwardly by a single stroke of the handle; an adjustable stop for limiting the initial movement of said gear and platen, a stop for determining the normal position of the gear, and a spring connected 11. The combination with a platen, a

platen frame, and a set of single-line spacing devices, of a pinion secured to the platen, a

'- horizontally moving but axially immovable sector mounted upon the platen frame and having a handle and normally disengaged from said pinion but revoluble to bring one of its ends into mesh with said pinion, said handle secured to said sector and projecting therefrom, a spring for the handle and sector, a stop for determining the extent of their initial strokes, a curved bar along which said stop may be adjusted, and a stop for determining'the normal positions of said sector and handle.

12. The combination with a revoluble platen and aset of single-line spacing devices therefor, of a toothed wheel connected 'to the platen, means normally disengaged from said e therewith to rotate the same to cause the platen to turn backwardly through an are greatly in excess sat-net of the line spacing movement of the platen, and a handle for turning said 'rotatlng means,

said rotating means being movable from nor- 2 mal position into engagement with said toothed wheel by the same stroke of the handle that causes said rotating means to rotats the toothed wheel.

13. The combination with a revoluble;

platen and a set of single-line spacing devices therefor, of a toothed wheel connected to the platen, means normally disengaged from said toothed wheel but engageable therewith to rotate the same to cause. the platen to turn backwardly through an are greatly in excess of the line spacing movement of the platen, handle for turning said-rotating means, said rotating means being movable from normal position into engagement with said toothed wheelby the same stroke of the handle that causes said rotating means to rotate the toothed wheel, and relatively adjustable stops for limiting the forward and backward movements of,,said platen effected by said handle.

14. The combination with a revoluble platen and a set of single-line spacing devices therefor, of a pinion connected to the platen, i

an axially immovable, sector. in rear of said pinion and. normally disengaged therefrom, and movable horizontally to bring one of its ends into engagement with said pinion to rotate the laten first backwardly and then forwardly t rough an arc greatly in excess of the line-spacing movement of the platen, a handle extending forwardly from said sector, and relatively adjustable stops for said handle and sector.

1 5. A line spacing device for typewriters embracing a pinion which turns with the platen, and a movable rack member mounted to intermesh with said pinion during both backward and forward movement of the platen, the rack member mounted to move out of mesh with said pinion at the conclusion of the forward turning movement of the platen, to permitthe latter to be line-spaced independently of the rack member.

16.' A line spacing device for typewriterscomprising a gear pinion connected to the platen and a rack member mounted to intermesh with, the said pinion to efiect aninitial stroke of the platen, and to pass out of mesh with the pinion at the return stroke of'the platen, to permit the latter to be line-spaced independentlypf the rack member.

- 17. A line spacing device for typewriters comprising a pinion which turns with the platen, a rack member ada ted to intermesh, with the gear pimon, whic is thrown out of mesh with the gear pinion in the forward turning movement of the platen and when so thrown out of mesh is held yieldingly in position free from engagement with the gear pmlon.

18. A line spacing device for typewriters 1 comprising a gear pinion which turns with i the platen, a rack me mber adapted to i'nter mesh with the gear pinion and which has backward and forward endwise movement tocarry said gear teeth into and out of mesh "with the pinion, said rack member being arranged to be thrown out of internicshing relation to the gear pinion by the forward turning movement of the platen, and means associated with said rack member for dctermim :5 l ing the extent.of movement of said rack member.

19. A line spacing device for typewriters comprising a gear pinion which turns with he platen, a rack member adapted'to intermesh with the gear pinion and which has backward and forward endwise movement- Z to carry said gear teeth into and out of mesh f with the pinion, said rack memberbeing ar- 1 ranged to be thrown out of intermeshing re- 55 Elation with the gear pinion by the forward I turning movement of the platen, and an adjustable stop for limiting the movement of said rack member.

20. A line spacing device fortypewriters comprising a gear pinion connected to the platen and a rack member mounted to intermesh with the said pinion to effect an initial strokeof the platen, and to pass out of mesh with the pinion at the return stroke of the platen, to permit the latter to be line-spaced independently of the rack member, and a spring to hold said rack member in normal position.

' 21. A platen-reciprocating device for typewriters embracing a pinion which turns with the platen, and a normally disengaged rack-- member which is mounted to rotate into mesh with said pinion, (to effect both backwlard and forward turning movement of the aten. p 22. A line-spacin device for typewriters embracing a norma ydisengaged movable gear which is mounted to rotate in one direction into engagement with a platen gear to turn with the platen, and to be thrown out of engagementwith said platen gear at the end of the return movement of the platen.

' 23. A line spacing device for typewriters embracing a pinion which turns with the platen shaft, a normally disengaged movable rack-member mounted to move endwise into mesh with the said pinion and to be carried out of mesh with said pinion at the return movement of the platen.

24. A line spacing device for typewriters comprising a gear pinion winch turns with the platen, and a rack-member having gear teeth adapted to intermesh with the pinion and which has backward and forward move- 125 ment in the direction of the line of gear-teeth thereon through a distance permitting the gear teeth to pass out of mesh with and to become disengaged from the gear pinion in the movement of said rack-member. 

